Traditional Chinese Practical Power-saving lamps: Circuit Design, Parts List & Workshop Prototype Guide
In short: Traditional Chinese Practical Power-saving lamps. This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 2539 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
energy saving lampLarge dry batteries are more expensive, so saving batteries is very meaningful. Here is a device that can extend the life of your dry cell battery by three times. The method is to use a 12V dry cell battery to light a 6V light bulb.Of course, simply connecting directly is not possible, because when a 6V light bulb is directly connected to a 12V light bulb, the current flowing through it will be twice as large as the rated current of the light bulb, thus burning the light bulb immediately. If a resistor is connected in series, of course it is possible, but the same current will also pass through the resistor, causing half of the electric energy to be wasted on the resistor. This is not worth the gain. …
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Lei Cheng
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